Per-VLAN Spanning Tree Plus (PVST+) | 813
PVST+ Sample Configurations
Figure 38-6, Figure 38-7, and Figure 38-8 provide the running configurations for the topology shown in
Figure 38-3.
Task Command Syntax Command Mode
Augment the Bridge ID with the VLAN ID. extend system-id PROTOCOL PVST
FTOS(conf-pvst)#do show spanning-tree pvst vlan 5 brief
VLAN 5
Executing IEEE compatible Spanning Tree Protocol
Root ID Priority 32773, Address 0001.e832.73f7
Root Bridge hello time 2, max age 20, forward delay 15
Bridge ID Priority 32773 (priority 32768 sys-id-ext 5), Address 0001.e832.73f7
We are the root of Vlan 5
Configured hello time 2, max age 20, forward delay 15
...
VLAN unaware
Hub
Dell Force10 System
P1
untagged in VLAN 10
P2
untagged in VLAN 20
X
moves to blocking unless
Extended System ID is
enabled
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